Synonyms for Mackinaw (same or very similar meaning)
WordNet sense 1 (a short plaid coat made of made of thick woolen material):
Mackinaw coatWordNet sense 2 (a thick plaid blanket formerly used in the northwestern United States):
Mackinaw blanketWordNet sense 3 (a flat-bottomed boat used on upper Great Lakes):
Mackinaw boatFrom the ODE community, based on WordNetadd/edit